Formal:
* Estou bem: This is the most common and neutral way to say "I am good" in Portuguese. It's suitable for formal situations.
* Estou ótimo/ótima: This means "I am great" and is a more positive way to express that you are doing well.
Informal:
* Estou bem: This can also be used in informal situations.
* Estou legal: This is a more informal way to say "I am good".
* Estou tranquilo/tranquila: This means "I am relaxed" and suggests you are feeling calm and at ease.
* Estou de boas: This is a very informal way to say "I am good" and is often used with friends.
Other options:
* Estou bem de saúde: This means "I am healthy" and focuses on your physical well-being.
* Estou bem disposto/disposta: This means "I am in good spirits" and emphasizes your mood.
The best way to say "I am good" in Portuguese depends on the situation and your relationship with the person you are talking to.